1. reptiles

Travaux du Muséum National d’Histoire Naturelle
«Grigore Antipa»
Vol. XLIX
pp. 331–340
© Octobre
2006
PRELIMINARY DATA ON THE HERPETOFAUNA OF THE COZIA
MASSIF (ROMANIA). 1. REPTILES
ALEXANDRU IFTIME, OANA IFTIME
Abstract. The preliminary results of herpetological studies in the Cozia massif in Vâlcea county,
Romania, are presented; the 10 reptile species identified in the field (4 of which are new records) are
presented together with data on their habitat association, abundance and impact of human activity.
Résumé. On présente les résultats préliminaries des études herpétologiques dans le massif de Cozia
(département de Vâlcea, Roumanie). Les 10 espèces, identifiées sur le terrain (dont 4 nouvellement
signalées), sont présentées avec les données concernant leur biotope, leur abondance et l’effet de
l’impact des activités humaines.
Key words: Cozia, reptiles, records, abundance, disturbance, habitat.
INTRODUCTION
The Cozia Massif (Vâlcea county, Romania) is remarkable for its geological
complexity, its richness in vegetation types and the long-time resilience of its
biocenoses to human pressure (Ploaie, 2004). It is primarily a massive horst
consisting of a core of gneisses, micaschists and paragneisses, and a periphery of
conglomerates, sandstones and occasionally limestone. Its landscape is picturesque,
with abrupt hanging cliffs, old (fixed) and recent screes and eroded rocks giving a
superficial impression of ruins. The maximal altitude is 1668 m above sea level in
the Cozia (Ciuha Neamþului) peak, while the minimal altitude is 350 m (Turnu
reservoir along Olt river). The Olt river, now dammed, is the most important water
course in this area; some rivulets such as Lotriºoru, Bãiaºu, Pãuºa and Pãteºti
originate in the massif and eventually drain into the Olt. The thermophilous
vegetation on the skirts of the massif includes shrub thickets comprising species
such as the smoketree (Cotinus coggygria), whitebeam (Sorbus aria f. cretica),
meadowsweet (Spiraea chamaedryfolia var. ulmifolia), spurge laurel (Daphne
mesereum), apple rose (Rosa villosa f. coziae) etc. Forests dominated by the sessile
oak (Quercus petraea) but including ash (Fraxinus excelsior), manna ash (F. ornus),
hornbeam (Carpinus betulus), linden (Tilia tomentosa, T. cordata) and walnut
(Juglans regia) occur between 350 and 1300 m, and beech (Fagus sylvatica, F. x
taurica) woods range from 400 to 1500 m. Rocky peaks and slopes and higher
altitudes are occupied by Scots pine (Pinus sylvestris), spruce (Picea abies), fir
(Abies alba), birch (Betula verrucosa), juniper (Juniperus communis, J. nana),
bilberry (Vaccinium myrtillus), Blagay’s Daphne (Daphne blagayana) etc.; alders
(Alnus viridis f. dacica), poplars (Populus spp.) and willows (Salix spp.) are to be
found along water courses. Altitudinal inversions are found here, with
thermophilous associations sometimes occupying sunny slopes and summits, while
ombrophilous associations occupy shaded valleys. The flora and vegetation of the
Cozia massif has been well investigated (Nyárády, 1955; Popescu et al., 1970;
Sanda et al., 1973; Dihoru, 1990 etc.) like the invertebrates (Kiss, 1970; Sãvulescu,
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ALEXANDRU IFTIME, OANA IFTIME
1972; Berbece, 1973 etc.) but the vertebrates have remained less studied. As for the
herpetofauna, eight reptile species are recorded for the Cozia massif (Fuhn &
Vancea, 1961, mention Vipera ammodytes, and later Berbece, 1968 [with some
records outside Cozia massif despite the title] and Ploaie, 2004 add Emys
orbicularis, Lacerta viridis [a photo of a female L. viridis is labelled L. agilis in
Ploaie, 2004], Podarcis muralis, Anguis fragilis, Natrix natrix, Zamenis longissimus
and Vipera berus); three amphibian species (Bufo viridis, Hyla arborea, Rana
temporaria) are recorded for the very close locality of Cãlimãneºti by Fuhn (1960);
later Cogãlniceanu et al. (2000) in a compilation of published and original data
reflected in distribution maps made in the UTM system, place Salamandra
salamandra and Bufo bufo records which can be interpreted as close enough to
Cozia, and Ploaie (2004) quotes Salamandra salamandra, Triturus cristatus, T.
montandoni (!), Rana dalmatina and R. ridibunda as present in the Cozia massif.
These sporadic and sometimes doubtful records, as well as an expectation of high
diversity, encouraged us to pursue a thorough investigation of the herpetofauna of
the Cozia massif and of its response to the human disturbance observed in the field,
preliminary results of which are given here.
MATERIALS AND METHODS
This paper is based upon field work performed in June, July and August
2005. The study of reptiles was carried following the active transects method (after
Heyer et al., 1994, and McDiarmid, 1992, in Cogãlniceanu, 1997), the transect being
4 m wide. Abundance classes were established by us as follows: 0 (not found); 1 (<1
ex/ 500 m stretch of transect); 2 (1-10 ex/ same length); 3 (10-30 ex/ same length);
4: > 30/ same length). Four transects were checked: T1 along Olt river (Turnu
reservoir) from Turnu monastery upstream to the mouth of Dumbrãviþa rivulet –
three times; T2 along the base of cliffs and the forest skirt from Turnu monastery to
Pãuºa - once; T3 from Pãuºa to Stâniºoara monastery at 1000 m altitude - twice; T4
from Stâniºoara monastery to Turnu monastery - once. The reptiles were observed
in the field, and captured by hand if necessary for identification and measurements,
and then released. Photographs were taken whenever possible. Relations were
recorded between habitat type, human disturbance and presence of reptile species.
RESULTS
10 species of reptiles were recorded by us (see table 1 for their distribution
and abundance in the checked transects).
Their association with different habitat types in the massif is given in table 2.
Their tolerance of different types of human disturbance is given in table 3.
Additionally, we report the observation of animals exhibiting symptoms of
disease, namely one Green Lizard and one Diced Snake, both juveniles. The first
presented lethargy, inflamed and closed eyes, skin lesions and nodules, incomplete
shedding, persistently raised head and tail, some of which symptoms have been
associated with viral infections in lacertids (Raynaud & Adrian, 1976; Uller et al.,
2003); the second exhibited a swelling at the joining of head and neck, indicating a
possible tumor or parasitic cyst.
Another interesting observation is that of a “record-length” Slowworm: a
mature female of 535 mm total length, considerably above the maximal value of
HERPETOFAUNA OF THE COZIA MASSIF (ROMANIA). 1. REPTILES
333
Table 1
Distribution and abundance of reptile species along transects.
Species
T1
Lacerta viridis (Green Lizard)
3
Lacerta agilis (Sand Lizard) *
0
Lacerta praticola (Meadow Lizard)*
0
Podarcis muralis (Wall Lizard)
3
Anguis fragilis (Slowworm)
1
Natrix natrix (Grass Snake)
1
Natrix tessellata (Diced Snake) *
1
Zamenis longissimus (Aesculapian Snake)
0
Coronella austriaca (Smooth Snake) *
0
Vipera ammodytes (Nose-Horned Viper)
1
An * marks a species now firstly recorded in the massif.
Abundance along transect:
T2
T3
3
2
1
2
0
1
4
1
0
1
1
1
0
0
0
1
1
0
0
0
T4
2
0
1
2
0
0
0
0
0
0
Table 2
Association of reptile species with habitat types.
Species
Broadleaf
forest,
skirt and
meadows
+
+
+
+
+
+
+
+
Thermophilous
thicket on
rocky
ground
+
+
+
+
-
Rocky
slope
and
scree
+
+
-
Riverside
coppice
Lacerta viridis (Green Lizard)
+
Lacerta agilis (Sand Lizard)
Lacerta praticola (Meadow Lizard) **
Podarcis muralis (Wall Lizard)
Anguis fragilis (Slowworm)
Natrix natrix (Grass Snake)
+
Natrix tessellata (Diced Snake)
+
Zamenis longissimus
(Aesculapian Snake)
Coronella austriaca (Smooth Snake)
+
Vipera ammodytes
+
+
(Nose-Horned Viper)
+ = recorded, – = unrecorded in given habitat. ** Found up to 1000 m altitude, the highest record for
this species in Romania.
507 mm given by Fuhn & Vancea (1961) which is itself above any other
measurement of this species found by us in Romanian or foreign literature.
The analysis of the populations of Sand Lizard (Lacerta agilis) is of
systematical interest as we have observed specimens intermediary in scalation and
color pattern between the subspecies L. a. agilis and L. a. chersonensis. Although on
the whole the population is closer to L. a. agilis, we recorded a dorsal stripe
coloration tending to greenish (as compared to brown in agilis and green in
chersonensis) in some males, and some specimens exhibiting one postnasal scale as
typical for chersonensis (as opposed to two as typical for agilis). Other
“chersonensis-like” traits noted are the reduction or disappearance of the vertebral
line (which is generally marked in agilis), narrowing of the dorsal stripe (wide in
agilis) with disappearance of dorsal-stripe ocelli (present in agilis) and presence of
larger dorsal spots (smaller in agilis) and a tendency for the individualization of the
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ALEXANDRU IFTIME, OANA IFTIME
Table 3
Reptile species found in areas of different disturbance types.
Frequent
Nonrecurring
camping,
habitat
parking, fires, altering e.g.
littering
road talus etc.
Species
Lacerta viridis (Green Lizard)
+
Lacerta agilis (Sand Lizard)
Lacerta praticola (Meadow Lizard)
Podarcis muralis (Wall Lizard)
Anguis fragilis (Slowworm)
Natrix natrix (Grass Snake)
Natrix tessellata (Diced Snake)
Zamenis longissimus
(Aesculapian Snake)
Coronella austriaca (Smooth Snake)
Vipera ammodytes
(Nose-Horned Viper)
+ = recorded, - = unrecorded in area with given disturbance.
Cattle
grazing
and
transit
+
+
+
+
+
+
+
+
+
+
-
Unintrusive
human
presence
(walking on
paths etc.)
+
+
+
+
+
+
+
-
+
-
+
+
+
-
+
Table 4
L. a. agilis-like and L. a. chersonensis-like traits in Lacerta agilis specimens.
Specimen
Pãuºa
valley, #1
Pãuºa
valley, #2
Pãuºa
valley, #3
Pãuºa
valley, #4
Pãuºa
valley, #5
Turnu lake
shore
Postnasal
scale
2
Dorsal stripe Dorsal stripe Dorsal stripe
coloration
width
spots/ ocelli
2
2
2
Vertebral
line
2
Paravertebral
lines
2
2
2
2
2
2
1
1
2
2
2
2
2
2
0
2
0
0
0
1
1
2
2
1
2
2
2
1
1
1
1
2 = agilis-like state; 1 = chersonensis-like state; 0 = neutral (erythronotus coloration occurring in both
subspecies).
two clear white paravertebral lines (seen in agilis as indistinct lighter areas). The
occurrence of agilis-like and chersonensis-like traits is summed in table 4.
DISCUSSION
Of the 10 species that we found, we can observe that all of the newly recorded
ones are present in low abundance and density (see table 1); this may be a reason for
their being overlooked by previous workers. The only species previously recorded
and not found by us as yet are the European Pond Turtle (Emys orbicularis) which is
HERPETOFAUNA OF THE COZIA MASSIF (ROMANIA). 1. REPTILES
335
recorded by Berbece (1968) in the hills surrounding Cozia massif, and the Adder
(Vipera berus); both may still be present.
From a zoogeographical point of vue, the record of the Meadow Lizard
(Lacerta praticola) is interesting as it is separated by more than 100 kms from other
L. praticola populations – the closest being in Ilfov county (Fuhn & Vancea, 1961),
Hunedoara county (Ghira et al, 2002) and Dolj county (Lazãr, 2004). At 1000 m
a.s.l. this is also the altitudinally highest ranging population of this species in
Romania.
The presence of intermediate morphologies between Lacerta agilis agilis1
and L. a. chersonensis is extremely interesting. As noted by Kiriþescu (1930), Fuhn
& Vancea (1961), Borcea (1974) and Kalyabina et al. (2001), pholidosis variability
in L. a. chersonensis encompasses the range of L. a. agilis (and L. a. exigua) while
the reciprocate situation does not occur, agilis being far more uniform in expressing
its typical characters than chersonensis (Kiriþescu, 1930; Fuhn & Vancea, 1961).
Therefore we may reasonably conclude that the presence of chersonensis-like
morphology (and coloration) in a population where agilis morphology predominates
implies an intergradation between the western and montane subspecies L. a. agilis
and the eastern and lowland subspecies L. a. chersonensis, especially as this
population is altitudinally spread from 350 to ca. 800 m a.s.l. and the closest
specimen to chersonensis was found at the lowest altitude by the dam lake. Further
investigations are needed in order to determine the precise distribution of the two
subspecies in the Olt valley and adjacent heights and the extent of the intergradation
area between them.
The rarity of all snake species, and also of the Slowworm and the Meadow
Lizards, in Cozia massif which is a national park, further highlights the need for
efficient protection. The most abundant species are the Green Lizard and the Wall
Lizard, a situation comparable with that found by us in the Southern Banat (see
Iftime, 2002, 2003, 2005).
The Green Lizard is both the most eurytopic and the most resilient of all
reptile species in the Cozia Mountains (see tables 2, 3). It is the only that occurs
in heavily disturbed areas such as those frequently occupied by campers, with
the additional nuisances of parking cars, camp fires, noise and abundant
littering. It can be noticed that such recurrent disturbance as camping is keeping
practically all reptile species away, while non-recurring disturbance even as it
alters habitat, does not preclude recolonization of the altered habitat by some
species once the disturbance has ceased. Thus, road taluses, railway
embankments, culverts and protection lining works made of cast concrete slabs
can be colonized by various species (Tab. 3). A minority of species are disturbed
by such low-impact grazing as practiced in this area, and none by “friendly”
activities such as limited touristic transit along footpaths. A conclusion is that
recurring touristical activities are more disturbing on the long term than
practices that are initially more invasive, but allow habitat recovery and
recolonization.
1 We do not follow Bischoff (1988) which attributes central European L. a. agilis populations
to a separate subspecies, L. a. argus (Laur., 1768); see Kalyabina et al. (2001), p. 154 for some
counter-evidence. Likewise, we do not follow Arribas (1997) and some subsequent workers in
admitting Darevskia (which would include Lacerta praticola) as a full genus rather than a sub-genus
of Lacerta.
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ALEXANDRU IFTIME, OANA IFTIME
ACKNOWLEDGEMENTS
We wish to thank Dr. Gheorghe Ploaie and dr. Victoria Tatole for providing useful literature.
Also our thanks goes to the anonymous referees.
DATE PRELIMINARE ASUPRA HERPETOFAUNEI MASIVULUI COZIA
(ROMÂNIA). 1. REPTILE.
REZUMAT
Sunt expuse rezultatele preliminare ale unor investigaþii herpetologice pe teritoriul masivului
Cozia (jud. Vâlcea, România); cele 10 specii identificate în teren (dintre care 4 nou semnalate) sunt
prezentate împreunã cu date legate de biotopul în care au fost gãsite, abundenþa lor ºi efectul
perturbãrilor antropice.
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Received: March 3, 2006
Accepted: April 19, 2006
Muzeul Naþional de Istorie Naturalã “Grigore Antipa”
ªos. Kiseleff nr. 1, 011341 Bucureºti 2, România
e-mail: [email protected]
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ALEXANDRU IFTIME, OANA IFTIME
Fig. 1 – A: Lacerta agilis, adult male, Pãuºa, showing chersonensis-like olive-greenish dorsal
coloration and one postnasal scale (photo by O. Iftime); B: Lacerta viridis, diseased juvenile (photo by
A. Iftime).
HERPETOFAUNA OF THE COZIA MASSIF (ROMANIA). 1. REPTILES
339
Fig. 2 – A: Lacerta praticola, Pãuºa (photo by A. Iftime); B: Podarcis muralis, on concrete
embankments, along Olt (photo by O. Iftime).
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ALEXANDRU IFTIME, OANA IFTIME
Fig. 3 – A: Anguis fragilis, adult female, 535 mm (photo by O. Iftime); B: Vipera ammodytes, subadult
(photo by A. Iftime).